Could someone please verify a portion of this configuration? Thank you.


I am more of a network administrator than Cisco networking guru, so when I saw these settings for a server, I was a bit thrown since the gateway is seemingly on a different network, although it works. I am primarily concerned with interface FastEthernet0/1 and if it is configured correctly. I would have thought the mask would be, but since there are multiple IPs for the one interface in the router config, maybe it is correct? I am including a sanitized router config: I have adjusted the first two octets in a standardized manner to protect my client in case there are any issues with security, and used xxx's over unimportant information. Thank you very much in advance.

The server had these settings:

IP address Gateway

Router config:

version 12.0 no service pad service tcp-keepalives-in service tcp-keepalives-out service timestamps debug datetime localtime service timestamps log datetime localtime service password-encryption ! ! ! ! clock timezone EST -5 clock summer-time EDT recurring ip subnet-zero no ip source-route ip cef no ip finger ip domain-name ip name-server x.x.x.x ip name-server x.x.x.x ! no ip bootp server ! ! ! interface FastEthernet0/0 ip address no ip directed-broadcast duplex auto speed auto no cdp enable ! interface Serial0/0 ip address no ip directed-broadcast ip accounting output-packets no ip mroute-cache no fair-queue no cdp enable ! interface FastEthernet0/1 ip address secondary ip address secondary ip address no ip directed-broadcast duplex auto speed auto no cdp enable ! ip classless ip route ip route ip route Null0 ip route Null0 no ip http server ! no cdp run snmp-server engineID local xxxxxxxxxxxxxxxxxxxxxxxx snmp-server community xxxxxxxxxxxx banner motd ^CUnauthorized access prohibited. For assistance please call xxxxxxxxxxxx.^C ! line con 0 transport input none line aux 0 line vty 0 4 password xxxxxxxxxxxxxxxxxxxxxxxxxx login ! ntp clock-period xxxxxxxx ntp source FastEthernet0/0 ntp server x.x.x.x end

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I believe your server also has additional IP address from network, otherwise this configuration would fail... Actually, server would not allow you to enter default gateway from network he is not directly connected to (if we're talking about Windows).

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The Windows Server 2003 does allow it, but it does give you a warning message asking you if you really want to do that.

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